ZippyShare PHP scraping script 0.1

<?php

/**
 * ZippyShare Scraper v0.1
 * by _Tobias
 * Usage:
 * $list [an array with full ZippyShare download page links]
 * $dlf [the folder in which the files will be downloaded]
 * Run from CLI please!
 */

if(php_sapi_name() != 'cli') {
    die('Run this script from CLI!'.PHP_EOL);
}


$list = array('http://www53.zippyshare.com/v/8362983/file.html');
// $list = explode(PHP_EOL, file_get_contents('FileWithNewlineSeperatedLinks.txt'));

$dlf = 'downloads/';

if(!is_dir($dlf)) {
    if(!mkdir($dlf)) {
        die("Can't create download folder");
    }
}

foreach($list as $v) {
    if(strlen($v) === 0) {
        continue;
    }
    $html = file_get_contents($v);

    // get download url
    if(preg_match('/var a = ([0-9%]+?);/', $html, $matches)) { // with var
        $token = eval('return '.$matches[1].';');
        preg_match('/href = "(.+?)";/', $html, $matches);
        $url = str_replace('"+a+"', $token, $matches[1]);
    }
    else { // without var, older servers
        preg_match('/href = (.+?);/', $html, $matches);
        $url = str_replace(array('"+', '+"'), array('".', '."'), $matches[1]); // + to . for php
        $url = eval('return '.$url.';');
    }

    // get size
    preg_match_all('/<font style=".+?">([0-9]{1}.+?B)<\/font>/', $html, $matches);
    $size = $matches[1][0];

    // get title
    preg_match('/<meta property="og:title" content="(.+?) " \/>/', $html, $matches);
    $title = $matches[1];

    // get server number
    preg_match('/www([0-9]+?)\./', $html, $matches);

    // assemble url
    $url = 'http://www'.$matches[1].'.zippyshare.com'.$url;

    // get session cookie
    $header = '';
    foreach($http_response_header as $h) {
        if(strpos($h, 'Set-Cookie: JSESSIONID=') === 0) {
            preg_match('/JSESSIONID=([A-F0-9]+?);/', $h, $matches);
            $header = 'Cookie: JSESSIONID='.$matches[1];
        }
    }

    // create a context for the download
    $context = stream_context_create(array('http' => array('method' => 'GET', 'header' => $header)));

    // assemble file name
    $fn = $dlf.$no.". ".$title;

    // start download
    if(is_file($fn)) {
        echo 'Skipping '.$title.' ('.$size.')'.PHP_EOL;
        continue;
    }
    else {
        echo 'Downloading '.$title.' ('.$size.')'.PHP_EOL;
    }
    file_put_contents($fn, file_get_contents($url, false, $context));
}